例句與造句

1. unstable objects such as barrels, boxes, loose brick or concrete blocks shall not be used to support scaffolds
   不得用桶、箱、散磚或混凝土塊之類的不穩(wěn)定物體支撐腳手架。
2. steel-wood composite support scaffold was employed for construction of danhe river super major bridge, a stone arch bridge with a main span of 146 m
   晉焦高速公路丹河特大橋為主跨146m的石拱橋，該橋在施工中采用鋼、木結合的支撐拱架。
3. It's difficult to find supporting scaffold in a sentence. 用supporting scaffold造句挺難的